Exchange Server Recipient Container Upda

I am a powerbuilder developer. Recently in my application an enhancement requires me to write code that will allow direct updates to a recipient container named 'product customers' in the exchange server. Once i have successfully deployed this enhancement, the users will update this container with customer information that will be later used while sending email's fax's etc.

Is this possible from the client side. Niether me nor the users are administrator of the domain or part of the exchangeserver administration team. We are just simple users. In such case what rights do we need to be able to update this container. Is it possible to give me a sample VBA code that will allow me to do this update.

A slightly detailed procedure for completing the above will be highly appreciated.